化学活动课作为化学课程体系的一个组成部分，但在农村中学中较难开展。
Though it is a part of Chemistry curriculum, it is very difficult for chemical activity course to be developed in rural middle schools.
化学活动课作为化学课程体系的一个组成部分，但在农村中学中较难开展。
Though it is a part of Chemistry curriculum, it is very difficult for chemical activity course to be developed in rural middle schools.
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